here are some tips for that hard badge: 1) relax 2) don't focus on the enemy. just hold spacebar in the general direction and focus on dodging on the ground (in the later levels you may have to rise a bit...) 3) make use of peripheral vision 4) the invaders don't shoot constantly but in bursts (some of them pretty long I'll admit), look for breaks and make use of them to shift positions 5) collect hearts. As many as you possibly can, cause chances are it's going to be pretty tight at level 7+ 6) practice :P cheers
 "Ragdoll Invaders"){kind=icon}
 "Particle Pong"){kind=icon}
 "Red"){kind=icon}
 "Frantic"){kind=icon}
 "The World's Hardest Game #2"){kind=icon}
 "SHIFT 3"){kind=icon}
 "Bloons Tower Defense 3"){kind=icon}
 "Run"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}